Refactor window creation and event handling APIs

Removes native_window_options from FFI bindings and updates window creation to use default settings. Refactors window event types to remove CREATED and CLOSED, and updates event handling in WindowManager. Adjusts example to position windows manually after creation.

Author: lijy91

examples/multiple_window_example/lib/main.dart

@@ -5,11 +5,25 @@ import 'package:flutter/src/widgets/_window.dart';
 import 'package:nativeapi/nativeapi.dart';
 
 void main() {
+  Display? primaryDisplay = DisplayManager.instance.getPrimary();
   WindowManager.instance.setWillShowHook((windowId) {
-    print('Window $windowId will show');
-  });
-  WindowManager.instance.setWillHideHook((windowId) {
-    print('Window $windowId will hide');
+    Window? window = WindowManager.instance.getById(windowId);
+    if (window != null && primaryDisplay != null) {
+      switch (window.title) {
+        case 'Primary Window':
+          // Top row, centered, full width (60% of work area)
+          _positionPrimaryWindow(window, primaryDisplay);
+          break;
+        case 'Secondary Window':
+          // Bottom left (half of 60% of work area)
+          _positionSecondaryWindow(window, primaryDisplay);
+          break;
+        case 'Tertiary Window':
+          // Bottom right (half of 60% of work area)
+          _positionTertiaryWindow(window, primaryDisplay);
+          break;
+      }
+    }
   });
   runWidget(
     ViewCollection(
@@ -18,6 +32,73 @@ void main() {
   );
 }
 
+void _positionPrimaryWindow(Window window, Display display) {
+  final workArea = display.workArea;
+
+  // Calculate 60% of work area dimensions
+  final totalWidth = workArea.width * 0.6;
+  final totalHeight = workArea.height * 0.6;
+
+  // Calculate starting position to center the layout
+  final startX = workArea.left + (workArea.width - totalWidth) / 2;
+  final startY = workArea.top + (workArea.height - totalHeight) / 2;
+
+  // Top row height: 50% of total height
+  final topRowHeight = totalHeight * 0.5;
+
+  // Top row, centered, full width
+  window.setSize(totalWidth, topRowHeight);
+  window.setPosition(startX, startY);
+}
+
+void _positionSecondaryWindow(Window window, Display display) {
+  final workArea = display.workArea;
+
+  // Calculate 60% of work area dimensions
+  final totalWidth = workArea.width * 0.6;
+  final totalHeight = workArea.height * 0.6;
+
+  // Calculate starting position to center the layout
+  final startX = workArea.left + (workArea.width - totalWidth) / 2;
+  final startY = workArea.top + (workArea.height - totalHeight) / 2;
+
+  // Top row height: 50% of total height
+  final topRowHeight = totalHeight * 0.5;
+  // Bottom row height: 50% of total height
+  final bottomRowHeight = totalHeight * 0.5;
+
+  // Bottom row: two windows side by side, each takes 50% width
+  final bottomWindowWidth = totalWidth * 0.5;
+
+  // Bottom left
+  window.setSize(bottomWindowWidth, bottomRowHeight);
+  window.setPosition(startX, startY + topRowHeight);
+}
+
+void _positionTertiaryWindow(Window window, Display display) {
+  final workArea = display.workArea;
+
+  // Calculate 60% of work area dimensions
+  final totalWidth = workArea.width * 0.6;
+  final totalHeight = workArea.height * 0.6;
+
+  // Calculate starting position to center the layout
+  final startX = workArea.left + (workArea.width - totalWidth) / 2;
+  final startY = workArea.top + (workArea.height - totalHeight) / 2;
+
+  // Top row height: 50% of total height
+  final topRowHeight = totalHeight * 0.5;
+  // Bottom row height: 50% of total height
+  final bottomRowHeight = totalHeight * 0.5;
+
+  // Bottom row: two windows side by side, each takes 50% width
+  final bottomWindowWidth = totalWidth * 0.5;
+
+  // Bottom right
+  window.setSize(bottomWindowWidth, bottomRowHeight);
+  window.setPosition(startX + bottomWindowWidth, startY + topRowHeight);
+}
+
 class PrimaryWindow extends StatefulWidget {
   const PrimaryWindow({super.key});
 

packages/cnativeapi/cxx_impl

@@ -62,149 +62,6 @@ class CNativeApiBindings {
   late final _native_accessibility_manager_is_enabled =
       _native_accessibility_manager_is_enabledPtr.asFunction<bool Function()>();
 
-  /// Window creation and destruction
-  ffi.Pointer<native_window_options_t> native_window_options_create() {
-    return _native_window_options_create();
-  }
-
-  late final _native_window_options_createPtr =
-      _lookup<
-        ffi.NativeFunction<ffi.Pointer<native_window_options_t> Function()>
-      >('native_window_options_create');
-  late final _native_window_options_create = _native_window_options_createPtr
-      .asFunction<ffi.Pointer<native_window_options_t> Function()>();
-
-  void native_window_options_destroy(
-    ffi.Pointer<native_window_options_t> options,
-  ) {
-    return _native_window_options_destroy(options);
-  }
-
-  late final _native_window_options_destroyPtr =
-      _lookup<
-        ffi.NativeFunction<
-          ffi.Void Function(ffi.Pointer<native_window_options_t>)
-        >
-      >('native_window_options_destroy');
-  late final _native_window_options_destroy = _native_window_options_destroyPtr
-      .asFunction<void Function(ffi.Pointer<native_window_options_t>)>();
-
-  bool native_window_options_set_title(
-    ffi.Pointer<native_window_options_t> options,
-    ffi.Pointer<ffi.Char> title,
-  ) {
-    return _native_window_options_set_title(options, title);
-  }
-
-  late final _native_window_options_set_titlePtr =
-      _lookup<
-        ffi.NativeFunction<
-          ffi.Bool Function(
-            ffi.Pointer<native_window_options_t>,
-            ffi.Pointer<ffi.Char>,
-          )
-        >
-      >('native_window_options_set_title');
-  late final _native_window_options_set_title =
-      _native_window_options_set_titlePtr
-          .asFunction<
-            bool Function(
-              ffi.Pointer<native_window_options_t>,
-              ffi.Pointer<ffi.Char>,
-            )
-          >();
-
-  void native_window_options_set_size(
-    ffi.Pointer<native_window_options_t> options,
-    double width,
-    double height,
-  ) {
-    return _native_window_options_set_size(options, width, height);
-  }
-
-  late final _native_window_options_set_sizePtr =
-      _lookup<
-        ffi.NativeFunction<
-          ffi.Void Function(
-            ffi.Pointer<native_window_options_t>,
-            ffi.Double,
-            ffi.Double,
-          )
-        >
-      >('native_window_options_set_size');
-  late final _native_window_options_set_size =
-      _native_window_options_set_sizePtr
-          .asFunction<
-            void Function(ffi.Pointer<native_window_options_t>, double, double)
-          >();
-
-  void native_window_options_set_minimum_size(
-    ffi.Pointer<native_window_options_t> options,
-    double width,
-    double height,
-  ) {
-    return _native_window_options_set_minimum_size(options, width, height);
-  }
-
-  late final _native_window_options_set_minimum_sizePtr =
-      _lookup<
-        ffi.NativeFunction<
-          ffi.Void Function(
-            ffi.Pointer<native_window_options_t>,
-            ffi.Double,
-            ffi.Double,
-          )
-        >
-      >('native_window_options_set_minimum_size');
-  late final _native_window_options_set_minimum_size =
-      _native_window_options_set_minimum_sizePtr
-          .asFunction<
-            void Function(ffi.Pointer<native_window_options_t>, double, double)
-          >();
-
-  void native_window_options_set_maximum_size(
-    ffi.Pointer<native_window_options_t> options,
-    double width,
-    double height,
-  ) {
-    return _native_window_options_set_maximum_size(options, width, height);
-  }
-
-  late final _native_window_options_set_maximum_sizePtr =
-      _lookup<
-        ffi.NativeFunction<
-          ffi.Void Function(
-            ffi.Pointer<native_window_options_t>,
-            ffi.Double,
-            ffi.Double,
-          )
-        >
-      >('native_window_options_set_maximum_size');
-  late final _native_window_options_set_maximum_size =
-      _native_window_options_set_maximum_sizePtr
-          .asFunction<
-            void Function(ffi.Pointer<native_window_options_t>, double, double)
-          >();
-
-  void native_window_options_set_centered(
-    ffi.Pointer<native_window_options_t> options,
-    bool centered,
-  ) {
-    return _native_window_options_set_centered(options, centered);
-  }
-
-  late final _native_window_options_set_centeredPtr =
-      _lookup<
-        ffi.NativeFunction<
-          ffi.Void Function(ffi.Pointer<native_window_options_t>, ffi.Bool)
-        >
-      >('native_window_options_set_centered');
-  late final _native_window_options_set_centered =
-      _native_window_options_set_centeredPtr
-          .asFunction<
-            void Function(ffi.Pointer<native_window_options_t>, bool)
-          >();
-
   /// Window basic operations
   int native_window_get_id(native_window_t window) {
     return _native_window_get_id(window);
@@ -3705,25 +3562,18 @@ class CNativeApiBindings {
   late final _native_tray_icon_list_free = _native_tray_icon_list_freePtr
       .asFunction<void Function(native_tray_icon_list_t)>();
 
-  /// Create a new window with the specified options
-  /// @param options Window creation options
+  /// Create a new window with default settings
   /// @return Window handle, or NULL if creation failed
-  native_window_t native_window_manager_create(
-    ffi.Pointer<native_window_options_t> options,
-  ) {
-    return _native_window_manager_create(options);
+  native_window_t native_window_manager_create() {
+    return _native_window_manager_create();
   }
 
   late final _native_window_manager_createPtr =
-      _lookup<
-        ffi.NativeFunction<
-          native_window_t Function(ffi.Pointer<native_window_options_t>)
-        >
-      >('native_window_manager_create');
+      _lookup<ffi.NativeFunction<native_window_t Function()>>(
+        'native_window_manager_create',
+      );
   late final _native_window_manager_create = _native_window_manager_createPtr
-      .asFunction<
-        native_window_t Function(ffi.Pointer<native_window_options_t>)
-      >();
+      .asFunction<native_window_t Function()>();
 
   /// Get a window by its ID
   /// @param window_id The window ID
@@ -3983,25 +3833,6 @@ enum native_placement_t {
   };
 }
 
-/// Window options structure for creating windows
-final class native_window_options_t extends ffi.Struct {
-  /// Window title
-  external ffi.Pointer<ffi.Char> title;
-
-  /// Initial window size
-  external native_size_t size;
-
-  /// Minimum window size
-  external native_size_t minimum_size;
-
-  /// Maximum window size
-  external native_size_t maximum_size;
-
-  /// Whether to center the window on screen
-  @ffi.Bool()
-  external bool centered;
-}
-
 /// Window list structure
 final class native_window_list_t extends ffi.Struct {
   external ffi.Pointer<native_window_t> windows;
@@ -4493,29 +4324,25 @@ final class native_tray_icon_list_t extends ffi.Struct {
 
 /// Window event types
 enum native_window_event_type_t {
-  NATIVE_WINDOW_EVENT_CREATED(0),
-  NATIVE_WINDOW_EVENT_CLOSED(1),
-  NATIVE_WINDOW_EVENT_FOCUSED(2),
-  NATIVE_WINDOW_EVENT_BLURRED(3),
-  NATIVE_WINDOW_EVENT_MINIMIZED(4),
-  NATIVE_WINDOW_EVENT_MAXIMIZED(5),
-  NATIVE_WINDOW_EVENT_RESTORED(6),
-  NATIVE_WINDOW_EVENT_MOVED(7),
-  NATIVE_WINDOW_EVENT_RESIZED(8);
+  NATIVE_WINDOW_EVENT_FOCUSED(0),
+  NATIVE_WINDOW_EVENT_BLURRED(1),
+  NATIVE_WINDOW_EVENT_MINIMIZED(2),
+  NATIVE_WINDOW_EVENT_MAXIMIZED(3),
+  NATIVE_WINDOW_EVENT_RESTORED(4),
+  NATIVE_WINDOW_EVENT_MOVED(5),
+  NATIVE_WINDOW_EVENT_RESIZED(6);
 
   final int value;
   const native_window_event_type_t(this.value);
 
   static native_window_event_type_t fromValue(int value) => switch (value) {
-    0 => NATIVE_WINDOW_EVENT_CREATED,
-    1 => NATIVE_WINDOW_EVENT_CLOSED,
-    2 => NATIVE_WINDOW_EVENT_FOCUSED,
-    3 => NATIVE_WINDOW_EVENT_BLURRED,
-    4 => NATIVE_WINDOW_EVENT_MINIMIZED,
-    5 => NATIVE_WINDOW_EVENT_MAXIMIZED,
-    6 => NATIVE_WINDOW_EVENT_RESTORED,
-    7 => NATIVE_WINDOW_EVENT_MOVED,
-    8 => NATIVE_WINDOW_EVENT_RESIZED,
+    0 => NATIVE_WINDOW_EVENT_FOCUSED,
+    1 => NATIVE_WINDOW_EVENT_BLURRED,
+    2 => NATIVE_WINDOW_EVENT_MINIMIZED,
+    3 => NATIVE_WINDOW_EVENT_MAXIMIZED,
+    4 => NATIVE_WINDOW_EVENT_RESTORED,
+    5 => NATIVE_WINDOW_EVENT_MOVED,
+    6 => NATIVE_WINDOW_EVENT_RESIZED,
     _ => throw ArgumentError(
       "Unknown value for native_window_event_type_t: $value",
     ),